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Q51. Which statement about the NHRP network ID is true?
A. It is sent from the spoke to the hub to identify the spoke as a member of the same NHRP domain.
B. It is sent from the hub to the spoke to identify the hub as a member of the same NHRP domain.
C. It is sent between spokes to identify the spokes as members of the same NHRP domain.
D. It is a locally significant ID used to define the NHRP domain for an interface.
Answer: D
Explanation:
The NHRP network ID is used to define the NHRP domain for an NHRP interface and differentiate between multiple NHRP domains or networks, when two or more NHRP domains (GRE tunnel interfaces) are available on the same NHRP node (router). The NHRP network ID is used to help keep two NHRP networks (clouds) separate from each other when both are configured on the same router. The NHRP network ID is a local only parameter. It is significant only to the local router and it is not transmitted in NHRP packets to other NHRP nodes. For this reason the actual value of the NHRP network ID configured on a router need not match the same NHRP network ID on another router where both of these routers are in the same NHRP domain. As NHRP packets arrive on a GRE interface, they are assigned to the local NHRP domain in the NHRP network ID that is configured on that interface.
Reference:
http://www.cisco.com/c/en/us/td/docs/ios/12_4/ip_addr/configuration/guide/hadnhrp.html
Q52. Refer to the exhibit.
Why is network 172.16.1.0/24 not installed in the routing table?
A. There is no ARP entry for 192.168.1.1.
B. The router cannot ping 192.168.1.1.
C. The neighbor 192.168.1.1 just timed out and BGP will flush this prefix the next time that the BGP scanner runs.
D. There is no route for 192.168.1.1 in the routing table.
Answer: D
Explanation:
Here we see that the next hop IP address to reach the 172.16.1.0 network advertised by the BGP peer is 192.168.1.1. However, the 192.168.1.1 IP is not in the routing table of R3 so it adds the route to the BGP table but marks it as inaccessible, as shown.
Q53. Which two statements about GLBP are true? (Choose two.)
A. Packets are forwarded by multiple routers that share one virtual IP address.
B. The active router forwards packets received on one virtual IP and MAC address.
C. The standby router forwards packets when the active router fails.
D. Hosts on the network are configured with multiple gateways for load balancing.
E. Routers in a GLBP group can share multiple virtual MAC addresses.
Answer: A,E
Q54. Which two protocols does the Management Plane Protection feature support? (Choose two.)
A. ARP
B. HTTPS
C. TFTP
D. OSPF
Answer: B,C
Q55. DRAG DROP
Drag and drop the OSPF network type on the left to the correct traffic type category on the right.
Answer:
Avant-garde 400-101 practice question:
Q56. Refer to the exhibit.
The interface FastEthernet0/1 of both routers R4 and R5 is connected to the same Ethernet segment with a multicast receiver. Which two statements are true? (Choose two)
A. Multicast traffic that is destined to a receiver with IP address 192.168.2.6 will flow through router R4.
B. Both routers R4 and R5 will send PIM join messages to the RP.
C. Only router R5 will send a multicast join message to the RP.
D. Multicast traffic that is destined to a receiver with IP address 192.168.2.6 will flow through router R5.
Answer: C,D
Explanation:
Even though R4 is the active HSRP router, traffic will flow through R5 and only R5 will send the join messages. The Multicast DR is elected by the higher IP address or priority. R5 has 192.168.2.2 and R4 has 192.168.2.1. R5 is the DR which sends all packets to the RP.
Q57. Refer to the exhibit.
Which two benefits result from using this command on a switch? (Choose two.)
A. The port cannot forward unknown unicast packets.
B. Network security is increased on the configured port.
C. The port cannot forward unknown multicast packets.
D. The port cannot forward unknown broadcast packets.
E. Network security is increased on all ports of the switch.
F. Unknown packets of all types, except unicast, are blocked.
Answer: A,B
Q58. Which neighbor-discovery message type is used to verify connectivity to a neighbor when the link-layer address of the neighbor is known?
A. neighbor solicitation
B. neighbor advertisement
C. router advertisement
D. router solicitation
Answer: A
Explanation:
IPv6 Neighbor Solicitation Message A value of 135 in the Type field of the ICMP packet header identifies a neighbor solicitation message. Neighbor solicitation messages are sent on the local link when a node wants to determine the link-layer address of another node on the same local link (see the figure below). When a node wants to determine the link-layer address of another node, the source address in a neighbor solicitation message is the IPv6 address of the node sending the neighbor solicitation message. The destination address in the neighbor solicitation message is the solicited-node multicast address that corresponds to the IPv6 address of the destination node. The neighbor solicitation message also includes the link-layer address of the source node.
Figure 1. IPv6 Neighbor Discovery: Neighbor Solicitation Message
Reference: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipv6_basic/configuration/xe-3s/ip6b-xe-3s-book/ip6-neighb-disc-xe.html
Q59. DRAG DROP
Drag and drop the OTV component on the left to the function it performs on the right.
Answer:
Q60. DRAG DROP
What is the correct order of the VSS initialization process? Drag the actions on the left to the correct initialization step on the right.
Answer: